A high-precision measuring instrument and measuring method for gearbox motor gear

Abstract

The present invention discloses a gearbox motor gear high-precision measuring instrument and measuring method, which relates to the field of gear measurement, including a base and a support shaft, wherein the support shaft is rotatably mounted above the base, and the gear to be measured is supported by the support shaft, and a centering locking mechanism is arranged on the outer side of the support shaft to position the gear to be measured on the outer side of the support shaft, and a measuring mechanism is arranged on the left side of the support shaft to measure the shape of the gear to be measured, and a measuring block is arranged on the right side of the support shaft, and the measuring block meshes with the tooth block gap of the gear to be measured and between the gears to be measured to form an up-and-down sliding structure. The gearbox motor gear high-precision measuring instrument and measuring method provide support for the gear to be measured by the support shaft, and subsequently the gear meshing gap is measured by the vertical movement of the measuring block in the tooth block gap of the gear to be measured, and the measuring block can move back and forth in the vertical direction, so that the subsequent measurement can be continuously performed.

Description

Technical Field

[0001] The invention relates to the technical field of gear measurement, and in particular to a high-precision measuring instrument and a measuring method for gearbox motor gears. Background Art

[0002] The gearbox motor gear is an important transmission component of the gearbox. Its performance will have a great impact on the gearbox. In order to ensure that the quality of the gear and the gear meshing clearance meet the quality requirements, the gear can be tested by a measuring instrument.

[0003] Prior art 1 (application number is CN202411153565.3, Chinese patent published on November 8, 2024) A gear measuring device and method, belonging to the field of gear measurement technology; the device comprises: a gear fixing device and a height adjustment structure arranged on one side of the gear fixing device; a measuring structure for measuring the gear is arranged on the top of the height adjustment structure; the gear fixing device comprises: a chuck shell with a hollow structure, a rotating drive structure rotatably connected to the inside of the chuck shell, and a gear clamping structure slidably arranged on the upper end of the rotating drive structure; it also comprises: an angle adjustment structure; the angle adjustment structure comprises an angle scale plate and a support column arranged at the center of the angle scale plate; wherein the chuck shell is rotatably connected to the upper end of the angle scale plate through the support column; this invention solves the technical problem that the existing gear detection cost is too high; Prior art 2 (application number is C N202321561862.2, a Chinese patent published on January 19, 2024) A gear measuring instrument comprises a measuring instrument housing, a slot is provided at the upper end of the measuring instrument housing, a top plate is fixedly installed on the side wall of the measuring instrument housing, a vertical bar is fixedly installed at the lower end of the top plate, an inner groove is provided on the side wall of the vertical bar, a U-shaped bar is slidably installed inside the inner groove, a measuring tooth is fixedly installed at the lower end of the U-shaped bar, a fixing mechanism comprises a contact bar, two contact bars are slidably arranged in the through groove, connecting rods are fixedly installed on the opposite ends of the two contact bars, extrusion plates are fixedly installed on the ends of the two connecting rods away from the contact bars, sliders are fixedly installed on the side walls of both sides of the two extrusion plates, two groups of sliders are respectively slidably arranged in two slide grooves, a spring is fixedly installed between the two extrusion plates, so that the device can effectively fix the gear when measuring it, and is suitable for gears of any specifications, with a wider range of applications.

[0004] Although the current gear measuring instrument can realize partial measurement of gears, its measurement is generally carried out on the diameter of the gear, etc., which is inconvenient to measure the gear meshing clearance, that is, the clearance of the gear tooth block. In addition, there are multiple clearances in one circle of the gear, and its measurement is cumbersome. It cannot effectively realize continuous and accurate measurement of the clearance, which reduces the measurement functionality and applicability of the device. Summary of the invention

[0005] The purpose of the present invention is to provide a high-precision measuring instrument for gearbox motor gears to solve the problem that the current measuring instrument proposed in the above background technology is inconvenient in measuring the gear meshing clearance, i.e. the clearance of gear tooth blocks, and there are multiple clearances in one circle of gears, which makes the measurement more cumbersome and cannot effectively realize continuous and accurate measurement of the clearance.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-precision measuring instrument for gearbox motor gears, comprising a base and a support shaft, wherein the support shaft is rotatably mounted above the base, and the support shaft provides support for the gear to be measured, and a centering locking mechanism is arranged on the outer side of the support shaft to position the gear to be measured on the outer side of the support shaft, and a measuring mechanism is arranged on the left side of the support shaft to measure the shape of the gear to be measured, and a measuring block is arranged on the right side of the support shaft, and the measuring block is meshed in the tooth block gap of the gear to be measured and between the gears to be measured to form an up and down sliding structure, and the measuring block Guide blocks are fixed on the upper and lower sides, and the guide blocks are designed to be inclined to provide guidance for the measuring block to move into the gear to be measured. An identification mechanism is arranged inside the measuring block, and the measuring block leaves a mark in the gap of the gear tooth block to be measured vertically through the identification mechanism of the gear to be measured. The meshing gap of the gear to be measured is judged by observing the depth of the marks on both sides. A driving block is fixed on the right side of the measuring block, and a vertical control mechanism is arranged on the right side of the driving block to control the vertical movement of the driving block. A rotating pushing mechanism is arranged below the support shaft to control the rotation of the support shaft to adjust the position of the gear to be measured.

[0007] To further optimize the technical solution, the centering locking mechanism includes a bracket, a limit block and an auxiliary head;

[0008] A bracket, fixed on the surface of the support shaft, provides bottom support for the gear to be tested;

[0009] The limit block is arranged above the bracket, and the surface of the limit block is designed in an inclined structure, and the surface of the limit block is made of rubber material;

[0010] The auxiliary head is fixed above the limit block, the support shaft passes through the auxiliary head and the limit block, and a threaded connection is formed between the support shaft and the auxiliary head.

[0011] To further optimize the technical solution, the measuring mechanism includes a diameter detection plate, a first spring and a first measuring device;

[0012] The diameter detection plate is arranged on the left side of the support shaft, and the right side surface of the diameter detection plate is made of polytetrafluoroethylene material, and a left-right sliding structure is formed between the diameter detection plate and the base;

[0013] A first spring is arranged on the left side of the diameter detection plate to provide a rightward thrust for the diameter detection plate;

[0014] The first measuring device is arranged on the right side of the diameter detecting plate to measure the displacement of the diameter detecting plate.

[0015] To further optimize the technical solution, a thickness detection plate is arranged on the right side of the diameter detection plate, and an up and down sliding structure is formed between the thickness detection plate and the diameter detection plate, and a second spring is arranged above the thickness detection plate to provide a downward thrust for the thickness detection plate, and a second measuring device is arranged above the thickness detection plate, and the second measuring device is installed on the side of the diameter detection plate to measure the displacement of the thickness detection plate.

[0016] To further optimize the technical solution, the marking mechanism includes a mounting slot and a line drawing head;

[0017] The mounting grooves are provided on the front and rear surfaces of the measuring block;

[0018] The drawing head is arranged inside the installation groove.

[0019] To further optimize the technical solution, a first magnet is fixed to one end of the line drawing head facing the measuring block, and a second magnet is fixed inside the mounting groove, and the second magnet and the first magnet attract each other.

[0020] To further optimize the technical solution, the vertical control mechanism includes a reciprocating screw, a motor and a mounting block;

[0021] A reciprocating screw penetrates the drive block and forms a threaded connection between the drive blocks;

[0022] A motor is arranged above the reciprocating screw to control the rotation of the reciprocating screw;

[0023] The mounting block is fixed on the top of the base, the right end of the driving block is located inside the mounting block and forms an up-and-down sliding structure between the mounting blocks, and the reciprocating screw is rotatably mounted inside the mounting block.

[0024] To further optimize the technical solution, the rotary pushing mechanism includes a transmission shaft, a driving gear and an automatic control mechanism;

[0025] A transmission shaft is installed below the support shaft and rotates synchronously with the support shaft;

[0026] A driving gear is fixed below the transmission shaft and is located inside the base;

[0027] The automatic control mechanism is arranged on the right side of the driving gear to control the rotation of the driving gear.

[0028] To further optimize the technical solution, the automatic control mechanism includes a first extrusion block, a first control rod, a third spring, a second extrusion block, a second control rod, a fourth spring and a linkage rod;

[0029] The first extrusion block is arranged above the driving gear, and the rear side of the first extrusion block is designed to be inclined, and an up-and-down sliding structure is formed between the first extrusion block and the base;

[0030] A first control rod is fixed on the right side of the first extrusion block, and an upper end of the first control rod penetrates the upper surface of the base, and the first control rod is located below the driving block;

[0031] A third spring, arranged on the outer side of the first control rod, provides an upward thrust to the first control rod;

[0032] The second extrusion block is arranged below the driving gear, and the second extrusion block and the first extrusion block are staggered in front and back, and the rear side of the second extrusion block is designed in an inclined structure;

[0033] A second control rod is fixed on the right side of the second extrusion block, and the upper end of the second control rod passes through the upper surface of the base;

[0034] A fourth spring, arranged on the outer side of the second control rod, provides a pull-down reset force for the second control rod;

[0035] The linkage rod is fixed above the second control rod, and the upper end of the second control rod is located above the driving block.

[0036] A high-precision measuring instrument and measuring method for gearbox motor gears, the method comprising the following steps:

[0037] Step 1: When in use, the gear to be tested can be placed above the support shaft so that it passes through the support shaft, and then the gear to be tested is positioned on the outside of the support shaft through the center locking mechanism so that it and the support shaft keep rotating synchronously, thus completing the installation of the gear to be tested;

[0038] Step 2: The outer shape of the gear to be measured is measured by the measuring mechanism, and the diameter and thickness of the gear can be measured. During the measurement, the supporting shaft can be controlled by the rotating push mechanism to drive the gear to be measured to rotate, and the diameter change and thickness change of the gear to be measured are measured by the rotation of the gear to be measured;

[0039] Step three: measure the tooth block gap by vertically moving the measuring block in the tooth block gap of the gear to be measured. When the gear to be measured stops moving, the driving block is controlled by the vertical control mechanism to drive the measuring block to move vertically, and the measuring block is brought into the tooth block gap in cooperation with the guide block. The measuring block slides vertically through the tooth block gap, and leaves a mark on the tooth block surface in cooperation with the marking mechanism when the measuring block passes. The size of the gap between the tooth blocks can be judged by observing the depth of the mark, thereby realizing the measurement of the subsequent meshing gap of the gear to be measured.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] (1) The support shaft is used to provide support for the gear to be measured, and the gear meshing clearance is subsequently measured by vertically moving the measuring block within the clearance of the gear tooth block to be measured. The measuring block can move back and forth in the vertical direction, so that subsequent measurements can be carried out continuously.

[0042] (2) The diameter of the gear to be measured can be detected by the diameter detection plate in conjunction with the first measuring device. When the gear to be measured rotates, the change in its diameter will drive the diameter detection plate to move. By measuring the change in the position of the diameter detection plate, the change in the diameter of the gear can be reflected, so that the diameter of the gear can be dynamically measured.

[0043] (3) The surface of the gear block of the gear to be measured is marked by a drawing head. The measuring gap can be controlled by setting the distance that the drawing head extends out of the measuring block. If the drawing head leaves no mark, it can be judged that the gear block gap exceeds the set size.

[0044] (4) The rotation of the transmission shaft can drive the support shaft to rotate, so that it can drive the gear to be measured to rotate, thereby measuring different positions of the gear to be measured.

[0045] (5) The intermittent movement of the first extrusion block and the second extrusion block can control the intermittent rotation of the driving gear, thereby driving the gear to be measured to move, thereby adjusting the position of the measured gear block, and the movement of the first extrusion block and the second extrusion block can be controlled by the movement of the measuring block. After the measuring block passes through the gear to be measured, it continues to move to control the movement of the first extrusion block or the second extrusion block, thereby realizing automatic control of the rotation of the gear to be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0047] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0048] Figure 3 This is a schematic diagram of the main cross-sectional structure of the limit block of the present invention;

[0049] Figure 4 This is a schematic diagram of the top view of the support shaft structure of the present invention;

[0050] Figure 5 This is a schematic diagram of the three-dimensional structure of the guide block of the present invention;

[0051] Figure 6 This is a schematic diagram of the top-sectional structure of the measuring block of the present invention;

[0052] Figure 7 This is a schematic diagram of the main cross-sectional structure of the base of the present invention;

[0053] Figure 8This is a schematic diagram of the top view of the driving gear structure of the present invention;

[0054] Fig. 9 It is a schematic diagram of the side structure of the second extrusion block of the present invention;

[0055] Fig.10 It is a schematic diagram of the side structure of the second control rod of the present invention.

[0056] In the figure: 1, base; 2, support shaft; 3, bracket; 4, limit block; 5, auxiliary head; 6, diameter detection plate; 7, first spring; 8, first measuring device; 9, thickness detection plate; 10, second spring; 11, second measuring device; 12, measuring block; 13, guide block; 14, drive block; 15, reciprocating screw; 16, motor; 17, mounting groove; 18, drawing head; 19, first magnet; 20, second magnet; 21, transmission shaft; 22, driving gear; 23, first extrusion block; 24, first control rod; 25, third spring; 26, second extrusion block; 27, second control rod; 28, fourth spring; 29, linkage rod; 30, mounting block. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] See also Figure 1-Figure 10 , the present invention provides the following technical solutions: a high-precision measuring instrument for gearbox motor gears, comprising a base 1 and a support shaft 2, the support shaft 2 being rotatably mounted above the base 1, and providing support for the gear to be measured through the support shaft 2;

[0059] Embodiment 1: The present invention provides the following technical solution, which discloses that a centering locking mechanism is provided on the outer side of the support shaft 2 to position the gear to be measured on the outer side of the support shaft 2, a measuring mechanism is provided on the left side of the support shaft 2 to measure the shape of the gear to be measured, a measuring block 12 is provided on the right side of the support shaft 2, and the measuring block 12 is meshed into the tooth block gap of the gear to be measured and between the gears to be measured to form an up and down sliding structure, guide blocks 13 are fixed on the upper and lower sides of the measuring block 12, and the guide block 13 is designed in an inclined shape to provide guidance for the measuring block 12 to move into the gear to be measured, an identification mechanism is provided inside the measuring block 12, and the measuring block 12 leaves a mark in the tooth block gap of the gear to be measured vertically through the identification mechanism of the gear to be measured, and the meshing gap of the gear to be measured is judged by observing the depth of the marks on both sides, a driving block 14 is fixed on the right side of the measuring block 12, and a vertical control mechanism is provided on the right side of the driving block 14 to control the vertical movement of the driving block 14, and a rotating pushing mechanism is provided below the support shaft 2 to control the support shaft 2 to rotate and adjust the position of the gear to be measured.

[0060] A high-precision measuring instrument and measuring method for gearbox motor gears, the method comprising the following steps:

[0061] Step 1: When in use, the gear to be tested can be placed above the support shaft 2 so that it passes through the support shaft 2, and then the gear to be tested is positioned on the outside of the support shaft 2 through the center locking mechanism so that it and the support shaft 2 keep rotating synchronously, thus completing the installation of the gear to be tested;

[0062] Step 2: The outer shape of the gear to be measured is measured by the measuring mechanism, and the diameter and thickness of the gear can be measured. During the measurement, the support shaft 2 can be controlled by the rotating push mechanism to drive the gear to be measured to rotate, and the diameter change and thickness change of the gear to be measured are measured by the rotation of the gear to be measured;

[0063] Step 3: The tooth block gap is measured by vertically moving the measuring block 12 in the tooth block gap of the gear to be measured. When the gear to be measured stops moving, the driving block 14 is controlled by the vertical control mechanism to drive the measuring block 12 to move vertically, and the measuring block 12 is brought into the tooth block gap in cooperation with the guide block 13. The measuring block 12 slides vertically through the tooth block gap, and the marking mechanism leaves a mark on the tooth block surface when the measuring block 12 passes. The size of the gap between the tooth blocks can be judged by observing the depth of the mark, so as to realize the measurement of the subsequent meshing gap of the gear to be measured.

[0064] Embodiment 2: On the basis of embodiment 1, a centering locking mechanism is disclosed, including a bracket 3, a limit block 4 and an auxiliary head 5. The bracket 3 is fixed on the surface of the support shaft 2 to provide bottom support for the gear to be measured. The limit block 4 is arranged above the bracket 3, and the surface of the limit block 4 is designed with an inclined structure, and the surface of the limit block 4 is made of rubber material. The auxiliary head 5 is fixed above the limit block 4. The support shaft 2 passes through the auxiliary head 5 and the limit block 4. A threaded connection is formed between the support shaft 2 and the auxiliary head 5. The measuring mechanism includes a diameter detection plate 6, a first spring 7 and a first measuring device 8. The diameter detection plate 6 is arranged on the left side of the support shaft 2, and the right side surface of the diameter detection plate 6 is made of polytetrafluoroethylene material, and a left-right sliding structure is formed between the diameter detection plate 6 and the base 1. The first spring 7 is arranged on the left side of the diameter detection plate 6 to provide the diameter detection plate 6 with a rightward push. force, a first measuring device 8 is arranged on the right side of the diameter detection plate 6 to measure the displacement of the diameter detection plate 6, a thickness detection plate 9 is arranged on the right side of the diameter detection plate 6, and an up and down sliding structure is formed between the thickness detection plate 9 and the diameter detection plate 6, and a second spring 10 is arranged above the thickness detection plate 9 to provide a downward thrust for the thickness detection plate 9, and a second measuring device 11 is arranged above the thickness detection plate 9, and the second measuring device 11 is installed on the side of the diameter detection plate 6 to measure the displacement of the thickness detection plate 9, the marking mechanism includes a mounting groove 17 and a line drawing head 18, the mounting groove 17 is opened on the front and rear side surfaces of the measuring block 12, the line drawing head 18 is arranged inside the mounting groove 17, a first magnet 19 is fixed to the end of the line drawing head 18 facing the measuring block 12, and a second magnet 20 is fixed inside the mounting groove 17, and the second magnet 20 and the first magnet 19 attract each other.

[0065] Before placing the gear to be measured, the diameter detection plate 6 can be pushed away from the support shaft 2 to provide a placement space for the gear to be measured. After the gear to be measured is placed on the support shaft 2, the limit block 4 can be inserted into the support shaft 2, and the auxiliary head 5 can be rotated to move the limit block 4 downward to limit the gear to be measured, and then the diameter detection plate 6 is loosened to fit the side of the gear to be measured, and the thickness detection plate 9 and the gear to be measured are also fitted, and the first measuring device 8 and the second measuring device 11 are used to measure the diameter and thickness of the gear to be measured, and the support shaft 2 can be controlled to carry out the detection. The gear to be measured is rotated to conduct a comprehensive inspection of the gear to be measured. When the measuring block 12 passes through the gear to be measured, the drawing head 18 in the measuring block 12 contacts the surface of the tooth block and leaves a mark, so as to measure the meshing clearance of the gear to be measured. The size of the meshing clearance of the tooth block can be judged by observing the depth of the mark and whether a mark is left. When the meshing clearance is too large, only one side is marked, or no mark is left. The problematic part can be quickly found out through subsequent observation, and each meshing port can be measured to improve the measurement accuracy. The drawing head 18 can also be disassembled and replaced.

[0066] Embodiment 3: Based on the embodiment 1, a vertical control mechanism is disclosed, which includes a reciprocating screw 15, a motor 16 and a mounting block 30. The reciprocating screw 15 passes through the driving block 14 and forms a threaded connection between the driving block 14. The motor 16 is arranged above the reciprocating screw 15 to control the rotation of the reciprocating screw 15. The mounting block 30 is fixed above the base 1. The right end of the driving block 14 is located inside the mounting block 30 and between the mounting block 30 to form an up-and-down sliding structure. The reciprocating screw 15 is rotatably mounted inside the mounting block 30, and the rotating push rod 16 is arranged above the base 1 to control the rotation of the reciprocating screw 15. The feeding mechanism includes a transmission shaft 21, a driving gear 22 and an automatic control mechanism. The transmission shaft 21 is installed below the support shaft 2 and keeps synchronous rotation with the support shaft 2. The driving gear 22 is fixed below the transmission shaft 21, and the driving gear 22 is located inside the base 1. The automatic control mechanism is arranged on the right side of the driving gear 22 to control the rotation of the driving gear 22. The automatic control mechanism includes a first extrusion block 23, a first control rod 24, a third spring 25, a second extrusion block 26, a second control rod 27, a fourth spring 28 and a linkage The rod 29, the first extrusion block 23, is arranged above the driving gear 22, and the rear side of the first extrusion block 23 is designed in an inclined structure, and the first extrusion block 23 and the base 1 form an up-and-down sliding structure, the first control rod 24, is fixed on the right side of the first extrusion block 23, and the upper end of the first control rod 24 passes through the upper surface of the base 1, and the first control rod 24 is located below the driving block 14, the third spring 25, is arranged on the outer side of the first control rod 24 to provide an upward thrust for the first control rod 24, and the second extrusion block 26 is arranged Below the driving gear 22, the second extrusion block 26 and the first extrusion block 23 are staggered front and back, and the rear side of the second extrusion block 26 is designed with an inclined structure. The second control rod 27 is fixed on the right side of the second extrusion block 26, and the upper end of the second control rod 27 passes through the upper surface of the base 1. The fourth spring 28 is arranged on the outer side of the second control rod 27 to provide a pull-down reset force for the second control rod 27. The linkage rod 29 is fixed above the second control rod 27, and the upper end of the second control rod 27 is located above the driving block 14.

[0067] When detecting the meshing clearance of the gear blocks, the reciprocating screw 15 is controlled by the motor 16 to rotate, driving the driving block 14 to reciprocate vertically. When the driving block 14 moves downward, it drives the guide block 13 and the measuring block 12 to move downward and pass through the gear to be measured. Then the driving block 14 continues to move downward, squeezing the first control rod 24, so that it drives the first extrusion block 23 to move downward. The first extrusion block 23 squeezes the gear block of the driving gear 22 to make it rotate, driving the transmission shaft 21 and the support shaft 2 to rotate, so that the gear to be measured rotates, and then the driving block 14 moves upward, driving the measuring block 12 to pass through the next set of measuring positions. The measuring block 12 continues to move upward, and the driving block 14 will push the linkage rod 29 upward to drive the second control rod 27 and the second extrusion block 26 to move. The second extrusion block 26 moves upward to push the driving gear 22 to continue to rotate, so that the gear to be measured rotates again, so that when the measuring block 12 reciprocates up and down, the gear block to be measured can automatically move to realize the switching of the measuring position.

[0068] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0069] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision measuring instrument for gearbox motor gears, comprising a base (1) and a support shaft (2), wherein the support shaft (2) is rotatably mounted above the base (1) and provides support for the gear to be measured via the support shaft (2); Features: The outer side of the support shaft (2) is provided with a center locking mechanism to position the gear to be measured on the outer side of the support shaft (2); the left side of the support shaft (2) is provided with a measuring mechanism to measure the shape of the gear to be measured; the right side of the support shaft (2) is provided with a measuring block (12), and the measuring block (12) is meshed in the tooth block gap of the gear to be measured and between the gears to be measured to form an up-and-down sliding structure; the upper and lower sides of the measuring block (12) are fixed with guide blocks (13), and the guide blocks (13) are designed to be inclined, so that the measuring block (12) is moved into the gear to be measured. The measuring block (12) is provided with a marking mechanism inside, the measuring block (12) passes through the gear to be measured vertically, the marking mechanism leaves a mark in the gap of the gear tooth block to be measured, and the meshing gap of the gear to be measured is judged by observing the depth of the marks on both sides. A driving block (14) is fixed on the right side of the measuring block (12), and a vertical control mechanism is provided on the right side of the driving block (14) to control the vertical movement of the driving block (14). A rotating pushing mechanism is provided below the support shaft (2) to control the support shaft (2) to rotate and adjust the position of the gear to be measured.

2. A high-precision measuring instrument for gearbox motor gears according to claim 1, characterized in that: The centering locking mechanism comprises a bracket (3), a limit block (4) and an auxiliary head (5); A bracket (3) is fixed on the surface of the support shaft (2) to provide bottom support for the gear to be tested; A limit block (4) is arranged above the bracket (3), and the surface of the limit block (4) is designed to be inclined, and the surface of the limit block (4) is made of rubber material; The auxiliary head (5) is fixed above the limit block (4); the support shaft (2) passes through the auxiliary head (5) and the limit block (4); and a threaded connection is formed between the support shaft (2) and the auxiliary head (5).

3. A high-precision measuring instrument for gearbox motor gears according to claim 2, characterized in that: The measuring mechanism comprises a diameter detection plate (6), a first spring (7) and a first measuring device (8); A diameter detection plate (6) is arranged on the left side of the support shaft (2), and the right side surface of the diameter detection plate (6) is made of polytetrafluoroethylene material, and a left-right sliding structure is formed between the diameter detection plate (6) and the base (1); A first spring (7) is arranged on the left side of the diameter detection plate (6) to provide a rightward thrust for the diameter detection plate (6); The first measuring device (8) is arranged on the right side of the diameter detection plate (6) to measure the displacement of the diameter detection plate (6).

4. A gearbox motor gear high-precision measuring instrument according to claim 3, characterized in that: A thickness detection plate (9) is arranged on the right side of the diameter detection plate (6), and an up-and-down sliding structure is formed between the thickness detection plate (9) and the diameter detection plate (6), and a second spring (10) is arranged above the thickness detection plate (9) to provide a downward thrust for the thickness detection plate (9), and a second measuring device (11) is arranged above the thickness detection plate (9), and the second measuring device (11) is installed on the side of the diameter detection plate (6) to measure the displacement of the thickness detection plate (9).

5. The high-precision measuring instrument for gearbox motor gears according to claim 1, characterized in that: The marking mechanism comprises a mounting groove (17) and a line drawing head (18); Mounting grooves (17) are provided on the front and rear surfaces of the measuring block (12); The drawing head (18) is arranged inside the mounting groove (17).

6. A high-precision measuring instrument for gearbox motor gears according to claim 5, characterized in that: A first magnet (19) is fixed to one end of the line drawing head (18) facing the measuring block (12), and a second magnet (20) is fixed inside the mounting groove (17), and the second magnet (20) and the first magnet (19) attract each other.

7. The high-precision measuring instrument for gearbox motor gears according to claim 1, characterized in that: The vertical control mechanism comprises a reciprocating screw (15), a motor (16) and a mounting block (30); A reciprocating screw (15) passes through the drive block (14) and forms a threaded connection between the drive block (14); A motor (16) is arranged above the reciprocating screw (15) to control the rotation of the reciprocating screw (15); The mounting block (30) is fixed above the base (1), the right end of the driving block (14) is located inside the mounting block (30) and between the mounting block (30) to form an up-and-down sliding structure, and the reciprocating screw (15) is rotatably mounted inside the mounting block (30).

8. A high-precision measuring instrument for gearbox motor gears according to claim 1 or 7, characterized in that: The rotary pushing mechanism comprises a transmission shaft (21), a driving gear (22) and an automatic control mechanism; A transmission shaft (21) is installed below the support shaft (2) and rotates synchronously with the support shaft (2); A driving gear (22) is fixed below the transmission shaft (21), and the driving gear (22) is located inside the base (1); The automatic control mechanism is arranged on the right side of the driving gear (22) to control the rotation of the driving gear (22).

9. The high-precision measuring instrument for gearbox motor gears according to claim 8, characterized in that: The automatic control mechanism comprises a first extrusion block (23), a first control rod (24), a third spring (25), a second extrusion block (26), a second control rod (27), a fourth spring (28) and a linkage rod (29); A first extrusion block (23) is arranged above the driving gear (22), and the rear side of the first extrusion block (23) is designed to be inclined, and an up-and-down sliding structure is formed between the first extrusion block (23) and the base (1); A first control rod (24) is fixed on the right side of the first extrusion block (23), and the upper end of the first control rod (24) passes through the upper surface of the base (1), and the first control rod (24) is located below the driving block (14); A third spring (25) is arranged on the outer side of the first control rod (24) to provide an upward thrust for the first control rod (24); A second extrusion block (26) is arranged below the driving gear (22), and the second extrusion block (26) and the first extrusion block (23) are arranged staggered in front and back, and the rear side of the second extrusion block (26) is designed to be inclined; A second control rod (27) is fixed on the right side of the second extrusion block (26), and the upper end of the second control rod (27) passes through the upper surface of the base (1); A fourth spring (28) is arranged on the outer side of the second control rod (27) to provide a pull-down reset force for the second control rod (27); The linkage rod (29) is fixed above the second control rod (27), and the upper end of the second control rod (27) is located above the driving block (14).

10. A high-precision measuring instrument and measuring method for gearbox motor gears, characterized in that: The method adopts the gearbox motor gear high-precision measuring instrument in claim 1, and the method comprises the following steps: Step 1: When in use, the gear to be tested can be placed above the support shaft (2) so that it passes through the support shaft (2), and then the gear to be tested is positioned outside the support shaft (2) through the center locking mechanism so that it and the support shaft (2) rotate synchronously, thereby completing the installation of the gear to be tested; Step 2: The outer shape of the gear to be measured is measured by the measuring mechanism, so that the diameter and thickness of the gear can be measured. During the measurement, the support shaft (2) can be controlled by the rotating push mechanism to drive the gear to be measured to rotate, and the diameter change and thickness change of the gear to be measured are measured by the rotation of the gear to be measured; Step 3: The tooth block clearance is measured by vertically moving the measuring block (12) within the tooth block clearance of the gear to be measured. When the gear to be measured stops moving, the driving block (14) is controlled by the vertical control mechanism to drive the measuring block (12) to move vertically, and the measuring block (12) is brought into the tooth block clearance in cooperation with the guide block (13). The measuring block (12) slides vertically through the tooth block clearance, and when the measuring block (12) passes through, a mark is left on the tooth block surface in cooperation with the marking mechanism. The size of the gap between the tooth blocks can be judged by observing the depth of the mark, thereby realizing the measurement of the subsequent meshing clearance of the gear to be measured.

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